From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: system macros/doquadrupleemtpy
Date: Wed, 3 Sep 2008 12:58:37 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.1.00.0809031251560.29281@nqv-yncgbc> (raw)
In-Reply-To: <F55E008D-0D0E-4826-8B16-0A7EC3B2D6CD@uni-bonn.de>
On Wed, 3 Sep 2008, Thomas A. Schmitz wrote:
> Hi all,
>
> I'm trying to define a macro \Command which can either have four or
> five arguments. If it has five, I want to define them as
>
> \Command1[#1][#2][#3][#4]{#5}
>
> if it has four, as
>
> \Command2[#1][#2][#3]{4#}
>
> I thought this would be the way to go:
>
> \def\Command{%
> \doquadrupleempty\doCommand}
You need something with possibly five arguments so you should use quint
rather than quad:
\def\Command%
{\doquintupleargument\doCommand}
> \def\doCommand{%
> \iffifthargument%
> \doquadrupleargument\Command1%
> \else%
> \dotripleargument\Command2%
> \fi}
The usual way is
\def\doCommand[#1][#2][#3][#4][#5]%
{\doifelsenothing{#5}%See below
{\Command1[#1][#2][#3][#4][#5]}
{\Command2[#1][#2][#3][#4]}}
I use \doifelsenothing rather than \doiffirthargument. If I give
\Command[...][...][...][...][] with \doifelsenothing \Commnad2 will be
called while with \iffifthargument \Command1 will be called. Use whichever
is more appropriate for your problem.
> but that gives me errors about "too many }s". So I'm wondering: am I
> on the wrong track? Can this be done at all?
The above code is untested, but I am pretty sure that it will work.
Aditya
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next prev parent reply other threads:[~2008-09-03 16:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-03 14:41 Thomas A. Schmitz
2008-09-03 16:58 ` Aditya Mahajan [this message]
2008-09-04 7:39 ` Thomas A. Schmitz
2008-09-03 18:32 ` Peter Rolf
2008-09-04 6:45 ` Wolfgang Schuster
2008-09-04 8:21 ` Thomas A. Schmitz
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